1628403466 has 4 divisors (see below), whose sum is σ = 2442605202. Its totient is φ = 814201732.

The previous prime is 1628403457. The next prime is 1628403467. The reversal of 1628403466 is 6643048261.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1167657241 + 460746225 = 34171^2 + 21465^2 .

It is not an unprimeable number, because it can be changed into a prime (1628403467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407100865 + ... + 407100868.

Almost surely, 2^1628403466 is an apocalyptic number.

1628403466 is a deficient number, since it is larger than the sum of its proper divisors (814201736).

1628403466 is an equidigital number, since it uses as much as digits as its factorization.

1628403466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814201735.

The product of its (nonzero) digits is 165888, while the sum is 40.

The square root of 1628403466 is about 40353.4814607117. The cubic root of 1628403466 is about 1176.4875599737.

The spelling of 1628403466 in words is "one billion, six hundred twenty-eight million, four hundred three thousand, four hundred sixty-six".